The L1B Visa is a non-immigrant visa that allows companies to transfer employees with specialized knowledge from a foreign office to a U.S. office. This visa is specifically designed for employees who possess unique skills or expertise that are essential to the company's operations in the United States. To qualify for the L1B Visa, the employee must have worked for the company for at least one continuous year within the last three years. The visa is typically granted for a period of one to three years, with the possibility of extensions, allowing companies to bring in talent that contributes to their success in the U.S. market.